反应详情

In a 1000-ml stainless steel magnetic stirrer type autoclave in which the atmosphere had been replaced with nitrogen, 162 g of 1-butene and 198 g of dicyclopentadiene were placed, and the reaction was carried out at 170° C. for 25 hours. After the completion of the reaction, unreacted 1-butene was collected by a trap in a bath including dry ice and methanol. Afterward, the resultant reaction liquid was subjected to a vacuum distillation in order to recover 52 g of unreacted dicyclopentadiene and to obtain 97 g of 5-ethyl-2-norbornene and 8 g of a fraction of a boiling point of 87° C./1 mmHg. In this case, the amount of recovered 1-butene was 112 g. Therefore, in this Diels-Alder reaction, the conversion of 1-butene was 31% and the selectivity of 5-ethyl-2-norbornene to reacted 1-butene was 89%.

1. customwas collected by a trap in a bath
2. customAfterward, the resultant reaction liquid
3. distillationwas subjected to a vacuum distillation in order
4. customto recover 52 g of unreacted dicyclopentadiene